diff --git a/libs/partners/box/langchain_box/document_loaders/box.py b/libs/partners/box/langchain_box/document_loaders/box.py
index 32dac91fbbd..f19e4ca3785 100644
--- a/libs/partners/box/langchain_box/document_loaders/box.py
+++ b/libs/partners/box/langchain_box/document_loaders/box.py
@@ -173,7 +173,7 @@ class BoxLoader(BaseLoader, BaseModel):
     """character_limit is an int that caps the number of characters to
        return per document."""
 
-    _box: Optional[_BoxAPIWrapper]
+    _box: Optional[_BoxAPIWrapper] = None
 
     model_config = ConfigDict(
         arbitrary_types_allowed=True,
diff --git a/libs/partners/box/langchain_box/retrievers/box.py b/libs/partners/box/langchain_box/retrievers/box.py
index 7715fbd42e2..4cb129ea762 100644
--- a/libs/partners/box/langchain_box/retrievers/box.py
+++ b/libs/partners/box/langchain_box/retrievers/box.py
@@ -128,7 +128,7 @@ class BoxRetriever(BaseRetriever):
     """character_limit is an int that caps the number of characters to
        return per document."""
 
-    _box: Optional[_BoxAPIWrapper]
+    _box: Optional[_BoxAPIWrapper] = None
 
     model_config = ConfigDict(
         arbitrary_types_allowed=True,
diff --git a/libs/partners/box/langchain_box/utilities/box.py b/libs/partners/box/langchain_box/utilities/box.py
index 4fef37a41c9..c482dcf36af 100644
--- a/libs/partners/box/langchain_box/utilities/box.py
+++ b/libs/partners/box/langchain_box/utilities/box.py
@@ -485,7 +485,7 @@ class _BoxAPIWrapper(BaseModel):
     """character_limit is an int that caps the number of characters to
        return per document."""
 
-    _box: Optional[box_sdk_gen.BoxClient]
+    _box: Optional[box_sdk_gen.BoxClient] = None
 
     model_config = ConfigDict(
         arbitrary_types_allowed=True,
diff --git a/libs/partners/huggingface/langchain_huggingface/llms/huggingface_pipeline.py b/libs/partners/huggingface/langchain_huggingface/llms/huggingface_pipeline.py
index 4eabaf908f4..42754d4698a 100644
--- a/libs/partners/huggingface/langchain_huggingface/llms/huggingface_pipeline.py
+++ b/libs/partners/huggingface/langchain_huggingface/llms/huggingface_pipeline.py
@@ -54,7 +54,7 @@ class HuggingFacePipeline(BaseLLM):
             hf = HuggingFacePipeline(pipeline=pipe)
     """
 
-    pipeline: Any  #: :meta private:
+    pipeline: Any = None  #: :meta private:
     model_id: str = DEFAULT_MODEL_ID
     """Model name to use."""
     model_kwargs: Optional[dict] = None